Dawson's Creek - my friend isn't there and it's my mystake:(

Hey
I am waching Dawson's Creek and show like that, and it always makes me sad. Cause a wish that i had a friendship like theirs... Someone who really understood me... I had one friend. A boy.
He is 2 years older then I, but that didn't matter untill know... We had been friends for about 10 years. I was 12. And then he started to become a teenager... I hated it. Then he meet an other boy and I became number 2. Then I sad to myself, that i wouldn't call him anymore. And I didn't...
Now I am 15 years old... We aren't friends anymore...
He never called me back.. and suddenly 3 years later. I don't know him anymore. And he don't know me. I have chance since that time... I have grown...
But I miss him soo much:( And i don't know what to do...